Invention Grant
- Patent Title: Temperature adaptive bandgap reference circuit
- Patent Title (中): 温度自适应带隙参考电路
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Application No.: US13637237Application Date: 2011-02-28
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Publication No.: US08907650B2Publication Date: 2014-12-09
- Inventor: Shaowei Zhen , Ping Luo , Ruhui Yang , Kang Yang , Bo Zhang
- Applicant: Shaowei Zhen , Ping Luo , Ruhui Yang , Kang Yang , Bo Zhang
- Applicant Address: CN Chengdu
- Assignee: University of Electronic Science and Technology of China
- Current Assignee: University of Electronic Science and Technology of China
- Current Assignee Address: CN Chengdu
- Agency: Caesar, Rivise, Bernstein, Cohen & Pokotilow, Ltd.
- Priority: CN201110040925 20110218
- International Application: PCT/CN2011/071383 WO 20110228
- International Announcement: WO2012/109805 WO 20120823
- Main IPC: G05F3/16
- IPC: G05F3/16 ; G05F3/30

Abstract:
This invention involves a bandgap reference circuit in IC. The temperature coefficient of conventional bandgap reference is large and the higher order compensation is difficult to implement. This invention provides an adaptive compensated bandgap reference which solves the problem only using lower order (first order) temperature coefficient compensation. The invention adopts segmental compensation circuit to realize adaptive segmental compensation of bandgap reference with low temperature coefficient. The technical solution includes traditional bandgap voltage reference circuit and adaptive feedback compensation circuit which consists of sample and hold circuit, voltage comparator and control module. This invention controls the bandgap voltage reference through systematical view and it has high process compatibility. This invention can find the best temperature characteristic curve adaptively, the output voltage has low temperature coefficient, meeting the requirement of fabrication process, the implementation is simple with small area. This invention relates to integrated circuits.
Public/Granted literature
- US20130314068A1 TEMPERATURE ADAPTIVE BANDGAP REFERENCE CIRCUIT Public/Granted day:2013-11-28
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